This is of course based on objective, scientific data obtained through years of research.
当然，这个论断是基于多年研究得出的客观科学数据。
Thee system is based on a design developed some years ago.
这种系统是基于几年前的一种设计。 。
The platform is based on a communications satellite that China has been building for years.
中国近年来一直在建造的通讯卫星所基于的平台(才是)。
Job security and salary should be based on employee performance, not on years of service.
工作保险和工资应该建立在雇员绩效的基础上而非工作年限上。
Job security and salary should be based on employee performance, not on years of service.
工作保险和工资应该建立在雇员绩效的基础上而非工作年限上。
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